CC2541

SWRS110D – JANUARY 2012 – REVISED JUNE 2013

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RF TRANSMIT SECTION

Measured on Texas Instruments CC2541 EM reference design with TA = 25°C, VDD = 3 V and fc = 2440 MHz

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Delivered to a single-ended 50-

Ω load through a balun using

0

maximum recommended output power setting

Output power

dBm

Delivered to a single-ended 50-

Ω load through a balun using

–23

minimum recommended output power setting

Programmable output power

Delivered to a single-ended 50-

Ω load through a balun using

23

dB

range

minimum recommended output power setting

f < 1 GHz

–52

dBm

Spurious emission conducted f > 1 GHz

–48

dBm

measurement

Suitable for systems targeting compliance with worldwide radio-frequency regulations ETSI EN 300 328 and

EN 300 440 Class 2 (Europe), FCC CFR47 Part 15 (US), and ARIB STD-T66 (Japan)

Differential impedance as seen from the RF port (RF_P and RF_N)

Optimum load impedance

70 +j30

Ω

toward the antenna

Designs with antenna connectors that require conducted ETSI compliance at 64 MHz should insert an LC

resonator in front of the antenna connector. Use a 1.6-nH inductor in parallel with a 1.8-pF capacitor. Connect

both from the signal trace to a good RF ground.

CURRENT CONSUMPTION WITH TPS62730

Measured on Texas Instruments CC2541 TPA62730 EM reference design with TA = 25°C, VDD = 3 V and fc = 2440 MHz,

1 Mbsp, GFSK, 250-kHz deviation, Bluetooth™ low energy Mode, 1% BER

(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RX mode, standard mode, no peripherals active, low MCU activity, MCU

14.7

at 1 MHz

RX mode, high-gain mode, no peripherals active, low MCU activity,

16.7

MCU at 1 MHz

Current consumption

mA

TX mode, –20 dBm output power, no peripherals active, low MCU activity,

13.1

MCU at 1 MHz

TX mode, 0 dBm output power, no peripherals active, low MCU activity,

14.3

MCU at 1 MHz

(1)

0.1% BER maps to 30.8% PER

32-MHz CRYSTAL OSCILLATOR

Measured on Texas Instruments CC2541 EM reference design with TA = 25°C and VDD = 3 V

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Crystal frequency

32

MHz

Crystal frequency accuracy

–40

40

ppm

requirement(1)

ESR

Equivalent series resistance

6

60

Ω

C0

Crystal shunt capacitance

1

7

pF

CL

Crystal load capacitance

10

16

pF

Start-up time

0.25

ms

The crystal oscillator must be in power down for a guard

time before it is used again. This requirement is valid for

Power-down guard time

3

ms

all modes of operation. The need for power-down guard

time can vary with crystal type and load.

(1)

Including aging and temperature dependency, as specified by [1]

8

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